Evidence map›Paper›PMID 28779877›Full record

ArticleEnvironment international2017

Occupational pesticide use and Parkinson's disease in the Parkinson Environment Gene (PEG) study.

Shilpa Narayan, Zeyan Liew, Jeff M Bronstein, Beate Ritz

Open access · greenAbstract read
In one paragraph

Article in Environment international, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 54 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
54citing papers in PubMed, 2 pooled it
17.2field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

54 citing papers in PubMed, 2 syntheses or guidelines pooled it, 121 citations in OpenAlex.

  1. Risk Factors for Brain Health in Agricultural Work: A Systematic Review.International journal of environmental research and public health · 2022
    Pooled it
  2. Occupational Exposures and Neurodegenerative Diseases-A Systematic Literature Review and Meta-Analyses.International journal of environmental research and public health · 2019
    Pooled it
  3. Longitudinal untargeted metabolomics of cognitive impairment in Parkinson's disease.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2026
    Article
  4. Article
  5. Article
  6. Article
  7. Review
  8. Differentiating between the impact of sex and gender in Parkinson's disease: utilising these to advance current understanding and care practices.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2026
    Review
  9. Article
  10. Article
  11. Review
  12. Article
  13. Article
  14. Article
  15. Article
  16. Herbicide-related health risks: key mechanisms and a guide to mitigation strategies.Journal of occupational medicine and toxicology (London, England) · 2025
    Review
  17. Environmental Risk Factors for Parkinson's Disease: A Critical Review and Policy Implications.Movement disorders : official journal of the Movement Disorder Society · 2025
    Review
  18. Article
  19. Article
  20. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors at 2 institutions in 1 country.

Shilpa NarayanDepartment of Epidemiology, Fielding School of Public Health, University of California, Los Angeles (UCLA), 650 Charles E. Young Drive, Los Angeles, CA 90095-1772, USA. Electronic address: snarayan29@ucla.edu.
Zeyan LiewDepartment of Epidemiology, Fielding School of Public Health, University of California, Los Angeles (UCLA), 650 Charles E. Young Drive, Los Angeles, CA 90095-1772, USA. Electronic address: zeyanliew@ucla.edu.
Jeff M BronsteinDepartment of Neurology, School of Medicine, UCLA, 710 Westwood Plaza, Los Angeles, CA 90095-1769, USA. Electronic address: JBronste@mednet.ucla.edu.
Beate RitzDepartment of Epidemiology, Fielding School of Public Health, University of California, Los Angeles (UCLA), 650 Charles E. Young Drive, Los Angeles, CA 90095-1772, USA; Department of Neurology, School of Medicine, UCLA, 710 Westwood Plaza, Los Angeles, CA 90095-1769, USA. Electronic address: britz@ucla.edu.
University of California, Los Angeles · USUCLA Medical Center · US

Funding

Translational Research Support CoreP30ES007048 · NIEHS · UNIVERSITY OF SOUTHERN CALIFORNIA · PI Joseph Leo Wiemels · 1996 to 2026
$46.4M
Center for Gene-Environment Studies in Parkinson DiseaseU54ES012078 · NIEHS · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI CHESSELET, MARIE-FRANCOISE S · 2002 to 2006
$7.1M
Project 4: Pesticides and Genes In PD: Studies In HumansP01ES016732 · NIEHS · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI CHESSELET, MARIE-FRANCOISE S · 2008 to 2012
$6.7M
PARKINSON'S DISEASES SUSCEPTIBILITY GENES AND PESTICIDESR01ES010544 · NIEHS · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI RITZ, BEATE R. · 2000 to 2015
$5.7M
NIEHS NIH HHS P01 ES016732NIEHS NIH HHS P30 ES007048NIEHS NIH HHS R01 ES010544NIEHS NIH HHS U54 ES012078
6 · The paper itself

Abstract

objectiveTo study the influence of occupational pesticide use on Parkinson's disease (PD) in a population with information on various occupational, residential, and household sources of pesticide exposure.

methodsIn a population-based case control study in Central California, we used structured interviews to collect occupational history details including pesticide use in jobs, duration of use, product names, and personal protective equipment use from 360 PD cases and 827 controls. We linked reported products to California's pesticide product label database and identified pesticide active ingredients and occupational use by chemical class including fungicides, insecticides, and herbicides. Employing unconditional logistic regression, we estimated odds ratios and 95% confidence intervals for PD and occupational pesticide use.

resultsEver occupational use of carbamates increased risk of PD by 455%, while organophosphorus (OP) and organochlorine (OC) pesticide use doubled risk. PD risk increased 110-211% with ever occupational use of fungicides, herbicides, and insecticides. Using any pesticide occupationally for >10years doubled the risk of PD compared with no occupational pesticide use. Surprisingly, we estimated higher risks among those reporting use of personal protective equipment (PPE).

conclusionsOur findings provide additional evidence that occupational pesticide exposures increase PD risk. This was the case even after controlling for other sources of pesticide exposure. Specifically, risk increased with occupational use of carbamates, OPs, and OCs, as well as of fungicides, herbicides, or insecticides. Interestingly, some types of PPE use may not provide adequate protection during pesticide applications.

Indexed as

AdultCaliforniaCarbamatesCase-Control StudiesFungicides, IndustrialHerbicidesHumansHydrocarbons, ChlorinatedInsecticidesLogistic ModelsMaleMiddle AgedOccupational ExposureOdds RatioOrganophosphorus CompoundsParkinson DiseaseCarbamatesFungicides, IndustrialHerbicidesHydrocarbons, ChlorinatedInsecticidesOrganophosphorus CompoundsCase control studyOccupational pesticide useParkinson's disease

Identifiers

PMID28779877
PMCPMC5629094
OpenAlexW2741279650

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.